In which state of matter would you expect to find water, at 20°C on Earth?

HI decomposes to H2 and I2 by the following equation: 2HI(g) → H2(g) + I2(g);Kc = 1.6 × 10−3 at 25∘C If 1.0 M HI is placed into

dsp73

Answer: The concentration of hydrogen gas at equilibrium is 0.037 M

Explanation:

We are given:

Initial concentration of HI = 1.0 M

The given chemical equation follows:

$2HI(g)\rightleftharpoons H_2(g)+I_2(g)$

Initial: 1.0

At eqllm: 1.0-2x x x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[H_2][I_2]}{[HI]^2}$

We are given:

$Kc=1.6\times 10^{-3}$

Putting values in above expression, we get:

$1.6\times 10^{-3}=\frac{x\times x}{(1.0-2x)^2}\\\\x=-0.043,0.037$

Neglecting the negative value of 'x' because concentration cannot be negative

So, equilibrium concentration of hydrogen gas = x = 0.037 M

Hence, the concentration of hydrogen gas at equilibrium is 0.037 M

6 0

2 years ago

50 POINTS BRAINLIEST - How many L of gas would 200.0 grams of CCl^4 occupy at STP? pls show work

Paladinen [302]

Answer:Oxygen has a molar mass of 16.00 g/mol. One mole of CO2 contains 32.00 grams of oxygen. One mole equals 22.4L at standard temperature and pressure. 0.60L CO2 equals 0.0268 mol at STP.

Explanation:

8 0

3 years ago

What are four rapidly decomposing things that you could put in a compost pile?

ANEK [815]

Answer:

Shredded leaves
Small bits of straw or hay, finely shredded
Shredded paper
Torn cardboard in small bits

Tip: The smaller the pieces, the faster it decomposes. Even fruits and veggies can decompose quickly if they are blended or chopped into small portions. If you add some worms to the compost pile, everything should decompose quickly! Just remember to avoid eggshells because they take FOREVER to decompose.

6 0

2 years ago

The equation [M] = mol/L represents which concentration measurement?

oksano4ka [1.4K]

The equation represented above is that of the molarity. In other words, molarity is the quotient obtained when the number of moles of the solute is divided by the volume of the solution in liters. The answer to this item is letter A.

5 0

2 years ago

Read 2 more answers

A chemical reaction that has the general formula of AB->A + B is best classified as a (blank) reaction.

AfilCa [17]

Answer: Decomposition

Explanation:

Synthesis reaction is a type of chemical reaction in which two reactants combine to give a single product.

Polymerization is a reaction where small units called as monomers joine together to form a large molecule called as polymer.

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B.

Oxidation is a reaction where a substance loses electrons and undergo an increase in oxidation state.

Replacement reaction is a type of chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

6 0

3 years ago